Battery Notifier BT <Android9


For Android 9 and under - Colored status bar numbers with low and full alarms

Green, blue, orange and red status bar numbers can be customized to display at the percentages you want. Optional yellow smiley face charging icons. Low & full battery notifications.

IMPORTANT: Many new Android devices have aggressive battery saving settings which shut down apps running in the background by default unless you make changes to your settings.
Go to: if our app is shutting down randomly for no reason, or look for something called "Duraspeed" in your Android settings and either turn it off or make an exception for our app.

For other problems try: or e-mail us at

NOTICE: BT does NOT stand for Bluetooth and this app has nothing whatsoever to do with Bluetooth. (BT comes from the original name of the app where BT stood for "Big Text")

NOTICE: Battery Notifier BT is NOT 100% compatible with Android 10 and up. If you have Android 10 or higher, and you still want colored numbers in the status bar, the original Battery Notifier BT MAY or may not work on your device. See Battery Notifier News "Will original Battery Notifier work on Android 10 and up?" at

If your device has Android 10 or up, Battery Notifier BT 2020 is optimized for those devices. It includes white only notifications in the status bar as required by Google going forward.

MALWARE NOTICE: Google Play is the only place authorized to carry our apps. If you installed an apk from some other site, it might have malware. If you think you might have installed an apk with malware, uninstall it immediately and run a virus program on your device.

Privacy concerns? We collect no information from you at all.
Only three permissions and no ads!

Features in Battery Notifier BT (For Android 9 and under)...
* Arial font in official Android colors (optional black background)
* Original green color option (transparent icon only)
* Low and Full battery alarms with repeat intervals
* Mute alerts (Postpone alarms)
* Battery temp (C or F), health, and "plugged/unplugged since" info in dashboard
* Charging icons - Smiley or battery level
* Full charge icons - Smiley with sunglasses or battery
* Display colors you want at the levels you want

Battery Notifier BT is one of the lightest apps available that puts the least possible strain on your battery.

Posts at
Will original Battery Notifier work on Android 10 and up?
Managing notifications in Battery Notifier Pro BT 2020
Help! I Can't Uninstall Your App!
Most Frequently Asked Questions
Some Free Apps Aren't Free

If you like Battery Notifier BT, please consider supporting the developers by purchasing Battery Notifier Pro BT.
NOTE: The following features only pertain to Battery Notifier Pro BT and ARE NOT in the basic version...

Battery Notifier Pro BT (For Android 9 and under) has...
* Many custom colored status bar numbers to easily monitor battery levels
* Roboto HD and bright ArialXL-b HD fonts with optional black background included
* FREE HD add-ons for the status bar, many with bright add-on numbers
* HD add-ons with ones that include the percent sign
* Bright Neon HD add-ons - All fuchsia, all purple, all yellow, all orange, or all red from zero to 100
* Animated charging icons
* Charger connection and disconnection alerts
* Wireless charger support
* Notification Priority (Change position of status bar icon (left/right) and the location of the notification in swipe down drawer (higher/lower)
* Custom full charge alarm percentage (70% to 100%)
* Play sound notifications in a loop
* Quiet hours (Mute alarms at certain hours)
* Various vibration lengths
* LED notifications (supported devices)
* Repeat notifications as often as every 2 minutes
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23,244 total

What's New

Added Send Feedback option with new support email address
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Additional Information

June 7, 2017
Current Version
Requires Android
1.6 and up
Content Rating
Offered By
4650 W. Oakey Blvd. Apt 2203 Las Vegas, NV 89102
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